Lever.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine\block;
 
use pocketmine\block\utils\LeverFacing;
use pocketmine\data\runtime\RuntimeDataDescriber;
use pocketmine\item\Item;
use pocketmine\math\Axis;
use pocketmine\math\Facing;
use pocketmine\math\Vector3;
use pocketmine\player\Player;
use pocketmine\utils\AssumptionFailedError;
use pocketmine\world\BlockTransaction;
use pocketmine\world\sound\RedstonePowerOffSound;
use pocketmine\world\sound\RedstonePowerOnSound;
 
class Lever extends Flowable{
    protected LeverFacing $facing = LeverFacing::UP_AXIS_X;
    protected bool $activated = false;
 
    protected function describeBlockOnlyState(RuntimeDataDescriber $w) : void{
        $w->enum($this->facing);
        $w->bool($this->activated);
    }
 
    public function getFacing() : LeverFacing{ return $this->facing; }
 
    public function setFacing(LeverFacing $facing) : self{
        $this->facing = $facing;
        return $this;
    }
 
    public function isActivated() : bool{ return $this->activated; }
 
    public function setActivated(bool $activated) : self{
        $this->activated = $activated;
        return $this;
    }
 
    public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
        if(!$this->canBeSupportedAt($blockReplace, Facing::opposite($face))){
            return false;
        }
 
        $selectUpDownPos = function(LeverFacing $x, LeverFacing $z) use ($player) : LeverFacing{
            if($player !== null){
                return Facing::axis($player->getHorizontalFacing()) === Axis::X ? $x : $z;
            }
            return $x;
        };
        $this->facing = match($face){
            Facing::DOWN => $selectUpDownPos(LeverFacing::DOWN_AXIS_X, LeverFacing::DOWN_AXIS_Z),
            Facing::UP => $selectUpDownPos(LeverFacing::UP_AXIS_X, LeverFacing::UP_AXIS_Z),
            Facing::NORTH => LeverFacing::NORTH,
            Facing::SOUTH => LeverFacing::SOUTH,
            Facing::WEST => LeverFacing::WEST,
            Facing::EAST => LeverFacing::EAST,
            default => throw new AssumptionFailedError("Bad facing value"),
        };
 
        return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
    }
 
    public function onNearbyBlockChange() : void{
        if(!$this->canBeSupportedAt($this, Facing::opposite($this->facing->getFacing()))){
            $this->position->getWorld()->useBreakOn($this->position);
        }
    }
 
    public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null, array &$returnedItems = []) : bool{
        $this->activated = !$this->activated;
        $world = $this->position->getWorld();
        $world->setBlock($this->position, $this);
        $world->addSound(
            $this->position->add(0.5, 0.5, 0.5),
            $this->activated ? new RedstonePowerOnSound() : new RedstonePowerOffSound()
        );
        return true;
    }
 
    private function canBeSupportedAt(Block $block, int $face) : bool{
        return $block->getAdjacentSupportType($face)->hasCenterSupport();
    }
 
    //TODO
}